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A hand imitating an ulnar claw. The metacarpophalangeal joints of the 4th and 5th fingers are extended and the Interphalangeal joints of the same fingers are flexed.. An ulnar claw, also known as claw hand or Spinster’s Claw, is a deformity or an abnormal attitude of the hand that develops due to ulnar nerve damage causing paralysis of the lumbricals.
In Dupuytren's contracture, the palmar fascia within the hand becomes abnormally thick, which can cause the fingers to curl and can impair finger function. The main function of the palmar fascia is to increase grip strength; thus, over time, Dupuytren's contracture decreases a person's ability to hold objects and use the hand in many different ...
There are different types of acquired hand deformities, each with distinct characteristics and underlying causes, such as boutonnière deformity, Dupuytren's contracture, gamekeeper's thumb, hand osteoarthritis deformity, mallet finger, swan-neck deformity, ulnar claw hand, among many others.
The index finger is still extended at the metacarpophalangeal joint (MCP joint) when the ulnar nerve innervated muscles (the interossei muscles) are still working. The index finger is not flexed at the proximal interphalangeal (PIP) and distal interphalangeal (DIP) joints, which looks like a pointing finger. Pointing Finger is therefore a much ...
The disorder results in a deformed finger which appears thin and has small bumps on the surface. Dupuytren's contracture does run in families, but is also associated with diabetes, smoking, seizure recurrence and other vascular disorders. Dupuytren's does not need any treatment as the condition can resolve on its own.
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In adjunct with surgery, refractory muscle contracture can also be treated with Botulinum toxins A and B; however, the effectiveness of the toxin is slowly lost over time, and most patients need a single treatment to correct muscle contracture over the first few weeks after surgery. [21] Shortening of the surgically lengthened muscle can re-occur.
Guillaume Dupuytren, Baron Dupuytren (UK: / ˌ dj uː p w iː ˈ t r æ̃, dj uː ˈ p w iː t r ɛ n /, [1] US: / d ə p w iː ˈ t r æ̃, d ə ˈ p w iː t r ən /, [2] French: [ɡijom dypɥitʁɛ̃]; 5 October 1777 – 8 February 1835) was a French anatomist and military surgeon.
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